One Piece has done a good job of communicating that a Jolly Roger is not merely a pirate flag ... or this is a ship or location under the protection of a certain crew. For example, the flying ...

and one of two surviving 17th-century Jolly Roger flags (that familiar black flag featuring a skull and crossbones). At the center of the museum, travelers can climb aboard a replica pirate ship ...

But death was super rare.” This one’s actually true. The Jolly Roger is the name given to a flag which identifies a pirate ship. It was typically a black flag that featured either a skull and ...